How to do nth term for 30,25,20,15

hi this is the question

find out the n th term for this..30,25,20,15,10 pl

30,25,20,15

Note that this is an arithmetic sequence with common difference -5.

So the nth term of this sequence can be written as:

a(n) = -5n + 35

n th term of the sequence 30,25,20,15,10 is
30 + (n -- 1)(25 -- 30) OR Tn = 35 -- 5n ANSWER

30 - 5(n - 1)